908 DEVICES INC

Ticker: MASS CUSIP: 65443P102 Class: Common Stock

JANUS HENDERSON GROUP PLC's Holding History (CIK: 0001274173)

Note: Option positions (PUT/CALL) are excluded.

Q4 2021

Shares 53,095 Value ($000) $1,374 Avg Close $29.42 Range $22.21 - $39.34

Q3 2021

Shares 52,374 Value ($000) $1,703 Avg Close $33.97 Range $29.20 - $39.81

Q2 2021

Shares 51,682 Value ($000) $2,003 Avg Close $45.29 Range $33.71 - $55.83

Q1 2021

Shares 80,798 Value ($000) $3,919 Avg Close $57.14 Range $38.88 - $79.60

Q4 2020

Shares 84,190 Value ($000) $4,795 Avg Close $58.41 Range $43.25 - $74.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2021	53,095	$1,374	$29.42	$22.21 - $39.34
Q3 2021	52,374	$1,703	$33.97	$29.20 - $39.81
Q2 2021	51,682	$2,003	$45.29	$33.71 - $55.83
Q1 2021	80,798	$3,919	$57.14	$38.88 - $79.60
Q4 2020	84,190	$4,795	$58.41	$43.25 - $74.00